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Abstract Objective To investigate the effect of osteoporotic vertebral compression fracture (OVCF) on the spinopelvic parameters，by comparing OVCF patients and asymptomatic elderly patients.Methods A total of 64 patients (including 22 males and 42 females) with osteoporotic vertebral compression fractures treated in Shougang Hospital from January 2017 to August 2017 were selected.All patients were performed the whole spinal lateral X-ray before operation.During the same period，60 asymptomatic elderly patients were recruited as the control group (20 males and 40 females)，and signed the informed consent and performed the whole spinal lateral X-ray.The PACS system was used to measure spinopelvic parameters in 124 cases，including pelvic incidence (PI)，pelvic tilt (PT)，sacral slope (SS)，lumbar lordosis(LL)，thoracic kyphosis (TK)，spinosacral angle (SSA)，sagittal vertical axis (SVA)，and C7 sagittal ratio (C7/SFD).SPSS20.0 statistical software was used for statistical analysis.Results There was no significant difference in PI between the OVCF group and the control group.The SS，LL，and SSA of the OVCF group were (31.23±8.88)°，(45.48±12.59)°，and (118.01±9.61)°，respectively，which were significantly smaller than those in the control group (P＜0.01).The PT，TK，SVA，and C7/SFD in the OVCF group were (19.75±10.46)°，(41.98±11.86)°，(34.72±40.72)mm，and (0.75±1.04)，respectively，which were significantly greater than those in the control group (P＜0.05).The sagittal imbalance ratios of SVA and C7/SFD in the OVCF group were 33.4% and 59.4%，respectively，which were significantly higher than those in the control group (P＜0.01).Conclusion Osteoporotic compression vertebral fractures (OVCF) can reduce LL，SS，SSA，and increase TK，PT，SVA，C7/SFD，which is prone to spinopelvic sagittal imbalance.Spinal deformity Surgery should be performed to restore sagittal balance.
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